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Blue Notes · Umpire Grade2026-06-19

CLE @ HOU

Home plate: Hunter Wendelstedt

“Reliable as a Tuesday: no complaints, no headlines.”

A-
Umpire Grade
94.9% accurate
0.5
Run Favor
runs, CLE
4
ABS Overturns
of 7 reviewed

What this shows — how Hunter Wendelstedt called the 137 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 130 right. Below, only his misses are plotted, alongside every pitch the ABS (Automated Ball-Strike System) reviewed on a challenge.

The zone, as he called it

Challenge 1: Jeremy Peña — the ump called it a strike, the robot ruled ball (OVERTURNED — ump overruled).1Challenge 2: Christian Walker — the ump called it a strike, the robot ruled strike (upheld — ump confirmed).2Challenge 3: Isaac Paredes — the ump called it a strike, the robot ruled ball (OVERTURNED — ump overruled).3Challenge 4: Jose Altuve — the ump called it a strike, the robot ruled ball (OVERTURNED — ump overruled).4Challenge 5: Yainer Diaz — the ump called it a ball, the robot ruled ball (upheld — ump confirmed).5Challenge 6: Brayan Rocchio — the ump called it a strike, the robot ruled strike (upheld — ump confirmed).6Challenge 7: Patrick Bailey — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).7
strike called ballball called strikeABS overturnedABS upheld

The calls that moved the game

  1. 1-0.28▼4 · 1-2 ball called strike· challenged ✓
    Jose Altuve vs Tanner Bibee
  2. 2-0.13▼7 · 1-1 ball called strike
    Yainer Diaz vs Daniel Espino
  3. 3+0.13▼8 · 1-1 strike called ball
    Cam Smith vs Erik Sabrowski

Run impact from the count run-value table: a missed strike three is worth far more than one on 3-0.

ABS — the Automated Ball-Strike System

7 pitches went to the robots · 4 overturned (ump overruled) · 3 upheld (ump confirmed). This is the ABS system’s own measurement — Hawk-Eye optical ball-tracking, not our model.

  1. 1Jeremy Peña — ump said strike, robot ruled ball: overturned.
  2. 2Christian Walker — ump said strike, robot ruled strike: upheld.
  3. 3Isaac Paredes — ump said strike, robot ruled ball: overturned.
  4. 4Jose Altuve — ump said strike, robot ruled ball: overturned.
  5. 5Yainer Diaz — ump said ball, robot ruled ball: upheld.
  6. 6Brayan Rocchio — ump said strike, robot ruled strike: upheld.
  7. 7Patrick Bailey — ump said ball, robot ruled strike: overturned.

Our tracked-rulebook zone matched the ABS ruling on 5 of 7 — a zone-definition gap (ABS grades a standardized, height-based zone), not our error.

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